Convert Eastern Standard Time to Greenwich Mean Time - Quick & Accurate
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Hover over any hour to see corresponding time in both zones
To schedule a meeting between EST and GMT:
Pro Tip: Schedule calls between 9:00 AM - 11:00 AM EST for maximum overlap with GMT business hours
| EST Time | GMT Time | Context |
|---|---|---|
| 12:00 AM | 05:00 AM | Midnight East Coast |
| 01:00 AM | 06:00 AM | Late Night |
| 02:00 AM | 07:00 AM | Late Night |
| 03:00 AM | 08:00 AM | Late Night |
| 04:00 AM | 09:00 AM | Late Night |
| 05:00 AM | 10:00 AM | Late Night |
| 06:00 AM | 11:00 AM | Early Morning EST |
| 07:00 AM | 12:00 PM | Night Time |
| 08:00 AM | 01:00 PM | Work Starts EST |
| 09:00 AM | 02:00 PM | Morning Meeting Window |
| 10:00 AM | 03:00 PM | Morning Meeting Window |
| 11:00 AM | 04:00 PM | Morning Meeting Window |
EDT (UTC-4) from March to November
America/New_York
BST (UTC+1) from March to October
Europe/London
| Eastern Standard Time (EST) | Greenwich Mean Time (GMT) |
|---|---|
Eastern Standard Time (EST) is 5 hours behind Coordinated Universal Time (UTC-5). During daylight saving time, the region observes Eastern Daylight Time (EDT), which is UTC-4. | Greenwich Mean Time (GMT) is aligned with Coordinated Universal Time (UTC+0). During daylight saving time, the region observes British Summer Time (BST), which is UTC+1. |
Where Is It Used? | |
United States
| United Kingdom
|
Other Countries And Regions | |
Canada
Caribbean & Central America
| Crown Dependencies
African Countries (Winter Only)
|
Key Facts | |
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GMT (Greenwich Mean Time) is 5 hours ahead of EST (Eastern Standard Time). This means when it's 12:00 PM in New York (EST), it's 5:00 PM in London (GMT). During daylight saving time (EDT to BST), the difference remains 5 hours.
The best time to call from EST to GMT is between 8:00 AM and 12:00 PM EST, which corresponds to 1:00 PM to 5:00 PM GMT. This ensures both parties are within standard business hours, with EST morning overlapping with GMT afternoon.
The time difference typically remains 5 hours, but can briefly be 4 hours when DST transitions don't align perfectly. EST becomes EDT (UTC-4) and GMT becomes BST (UTC+1). Most of the year, the difference stays constant at 5 hours.
EST cities include New York, Miami, Atlanta, Boston, and Philadelphia in the United States. GMT cities include London, Manchester, Birmingham, Liverpool, and Edinburgh in the United Kingdom.
In the US, DST starts on the second Sunday in March and ends on the first Sunday in November. In the UK, BST starts on the last Sunday in March and ends on the last Sunday in October. These dates don't always align, causing brief 4-hour differences.